I'm Michelle. I'm 13 years old. I have a brother and a sister. My brother is 16 years old and my sister is only 4 years old. I like hamburgers and sausages(香肠) most(最). My sister and I like table tennis. Today is April 21st. It is my mother's birthday. There is a big birthday cake on the table. How much is it? Do you know? It's thirty dollars. I want to invite all of you to my mother's birthday party and have the birthday cake.